Problem set 6 has been graded. If you did not turn in a paper copy, grades
are available in the dropbox. Just a couple notes:
1. Don't forget to set the variables to their medians (Zelig defaults to
the means). Also, when you have interaction terms, you need to set it to
the interaction of the medians, not the median of the interactions. For
example, it should be median(target)*median(coop), not median(target*coop).
Luckily Zelig does it correctly if you specify the lower order terms.
2. Scientific notation on tables is not good practice.
3. The cutpoints are also parameters in the ordered probit model.
--
Patrick Lam
Department of Government and Institute for Quantitative Social Science,
Harvard University
http://www.people.fas.harvard.edu/~plam